Insulation
Pipes
- All pipes, excluding the Cold Supply pipe (line B), are required to be insulated with minimum 1” (R-6) insulation.
- Include insulation on all valves and couplings.
- Pipes should be clamped outside of the insulation.

CO2 Heat Pump Water Heater
- All requirements above apply to CO2 HPWH piping.
- Piping inside of CO2 HPWH cover should also be insulated.
- Ensure all outside piping is weatherized.
SANCO2 Tank
- 1+” polyiso (min. R-6) insulation required under tank
- Insulate tank with min. R-8 insulation around sides and top of tank.
- Insulate pressure relief valve with min. R-6 insulation.
Reclaim Tank
- No additional insulation is needed under, or around, the Reclaim tank
- Place included fiberglass insulation between and around the top plumbing connections. Attach lid using the four screws provided. (See image below)
- Use the provided K-flex insulation on the provided heat traps.
- Install the provided PRV insulation, and insulate at least 6” along the discharge plumbing.
